Journal of Failure Analysis and Prevention

, Volume 10, Issue 6, pp 504–507 | Cite as

Failure Investigation of Direct Write Pen Tips

  • David A. Roberson
  • Eric MacDonald
  • Ken Church
  • Ryan B. Wicker
Technical Article---Peer-Reviewed


Scanning electron microscopy of direct write pen tips provided fractographic evidence that pen tip failure was due to impact fracture. It is recommended that safeguards be implemented into the direct write system that will prevent impact between the pen tips and the print media.


SEM Impact Ceramics Micro failure analysis Alumina Scanning electron microscope 



The research presented here was performed through the W.M. Keck Center for 3D Innovation at The University of Texas at El Paso (UTEP). This research was supported through the NSF under grant number HRD-0929727 and the Mr. and Mrs. MacIntosh Murchison Chair I in Engineering.


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Copyright information

© ASM International 2010

Authors and Affiliations

  • David A. Roberson
    • 1
  • Eric MacDonald
    • 2
  • Ken Church
    • 2
  • Ryan B. Wicker
    • 3
  1. 1.Metallurgical and Materials EngineeringThe University of Texas at El PasoEl PasoUSA
  2. 2.Electrical and Computer EngineeringThe University of Texas at El PasoEl PasoUSA
  3. 3.Mechanical EngineeringThe University of Texas at El PasoEl PasoUSA

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